Foltýn Michael, Kvapil Michal, Šikola Tomáš, Horák Michal
Brno University of Technology, Central European Institute of Technology, Purkyňova 123, Brno 612 00, Czech Republic.
Brno University of Technology, Faculty of Mechanical Engineering, Institute of Physical Engineering, Technická 2, Brno 616 69, Czech Republic.
J Phys Chem Lett. 2025 Sep 25;16(38):9933-9938. doi: 10.1021/acs.jpclett.5c02531. Epub 2025 Sep 13.
Bismuth nanoparticles are being investigated due to their reported photothermal and photocatalytic properties. In this study, we synthesized spherical bismuth nanoparticles (50-600 nm) and investigated their structural and optical properties at the single-particle level using analytical transmission electron microscopy. Our experimental results, supported by numerical simulations, demonstrate that bismuth nanoparticles support localized surface plasmon resonances, which can be tuned from the near-infrared to the near-ultraviolet spectral region by changing the nanoparticle size. Furthermore, plasmonic resonances demonstrate stability across the entire spectral bandwidth, enhancing the attractiveness of bismuth nanoparticles for applications over a wide spectral range. Bismuth's lower cost, biocompatibility, and oxidation resistance make bismuth nanoparticles a suitable candidate for utilization, particularly in large-scale and even industrial plasmonic applications.
由于铋纳米颗粒具有报道的光热和光催化特性，因此正在对其进行研究。在本研究中，我们合成了球形铋纳米颗粒（50 - 600纳米），并使用分析型透射电子显微镜在单颗粒水平上研究了它们的结构和光学性质。我们的实验结果得到了数值模拟的支持，表明铋纳米颗粒支持局域表面等离子体共振，通过改变纳米颗粒尺寸，可以将其从近红外光谱区域调谐到近紫外光谱区域。此外，等离子体共振在整个光谱带宽上都表现出稳定性，增强了铋纳米颗粒在宽光谱范围内应用的吸引力。铋的低成本、生物相容性和抗氧化性使铋纳米颗粒成为一种合适的利用候选材料，特别是在大规模甚至工业等离子体应用中。
